package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
@Transactional
@Slf4j
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService
{
    /**
     * app端登录功能
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult login(LoginDto dto) {
        // ======1.游客登录======
        if (StringUtils.isBlank(dto.getPhone()) || StringUtils.isBlank(dto.getPassword())) {
            Map<String, Object> map = new HashMap<>();
            map.put("token", AppJwtUtil.getToken(0L));
            return ResponseResult.okResult(map);
        }

        // ======2.正常登录 用户名和密码======
        // 2.1 根据手机号查询用户信息
        ApUser dbUser = getOne(Wrappers
                .<ApUser>lambdaQuery()
                .eq(ApUser::getPhone, dto.getPhone()));
        if (dbUser == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST, "用户信息不存在");
        }

        // 2.2 比对密码
        String salt = dbUser.getSalt();
        String password = dto.getPassword();
        String pswd = DigestUtils.md5DigestAsHex((password + salt).getBytes());
        if (!pswd.equals(dbUser.getPassword())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }

        // 2.3 返回数据  jwt  user
        String token = AppJwtUtil.getToken(dbUser
                .getId()
                .longValue());
        Map<String, Object> map = new HashMap<>();
        map.put("token", token);
        dbUser.setSalt("");
        dbUser.setPassword("");
        map.put("user", dbUser);

        return ResponseResult.okResult(map);
    }
}
